39455755494 has 16 divisors (see below), whose sum is σ = 79434105600. Its totient is φ = 13064819400.

The previous prime is 39455755489. The next prime is 39455755511. The reversal of 39455755494 is 49455755493.

It is a happy number.

It is a super-2 number, since 2×39455755494² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21773794 + ... + 21775605.

It is an arithmetic number, because the mean of its divisors is an integer number (4964631600).

Almost surely, 2^39455755494 is an apocalyptic number.

39455755494 is an abundant number, since it is smaller than the sum of its proper divisors (39978350106).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

39455755494 is a wasteful number, since it uses less digits than its factorization.

39455755494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43549555.

The product of its digits is 68040000, while the sum is 60.

Subtracting 39455755494 from its reverse (49455755493), we obtain a palindrome (9999999999).

The spelling of 39455755494 in words is "thirty-nine billion, four hundred fifty-five million, seven hundred fifty-five thousand, four hundred ninety-four".